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FAQ Speech Synthesis LSI Series with Built-in Large Capacity P2ROM™

Frequently asked questions (FAQ) about Speech Synthesis LSI Series with Built-in Large Capacity P2ROM™

FAQ Speech Synthesis LSI Series with Built-in Large Capacity P2ROM™

General

Category Questions
Specifications
(electric characteristics, functions)		 NEW
We are considering to divide the region into two by using the memory bank function and increase the number of phrases.
We think that switching of SEL0 pin is necessary before PLAY command transmission. (SEL1 pin is directly connected to GND.) Please show us the each switching timings of 1 phrase playback and continuous playback.>>
NEW
Please let us know the recommended process of SEL0 and SEL1 pins (GND, Vdd, Open) when the number of memory bank is set 1.>>
NEW
In case of supplying the external clock to XT pin, how much extent of current consumption IDDS characteristics at power down cannot be satisfied when XT pin is L fixed at power down condition with supplying clock continuously?>>
NEW
How much electroc current when inputting the external clock to XT pin at power down? >>
NEW
Regarding AC characteristics, do we have to output "H" in case of SCK does not output clock?>>

ML2280×/ML22P80×

Category Questions
Specifications
(electric characteristics, functions)		 NEW
To what extent of mA can the H level output current of NCR pin and BUSY pin be drived? >>
NEW
How much AOUT current can be drived when the external speaker amplifier is connected?>>

ML2272×/ML2276×

Category Questions
Specifications
(electric characteristics, functions)		 NEW
Please let us know what we should give our attention to when using speed control function.>>
NEW
Please describe the speed and pitch control function.>>
Operation
(software, command)		 NEW
Please let us know the time needed for the volume change on ML2276×.
The time from command sending to starting time and ending time of change. The time after inputting AVOL.>>
Tools NEW
Should we set anything on Speech LSI Utility when using speed control function?>>

ML2282×/ML2286×

Category Questions
Specifications
(electric characteristics, functions)		 NEW
How should we handle the amplifier pins ( SPVDD, SPGND ) when it don't use the speaker amplifier?>>
NEW
There are 3V version and 5V version mention in the electrical characteristic.
Does it mean IC differs? Or is it the power supply condition difference?>>
NEW
Should we set DAG [ 1:0 ] to [ 0:0 ] when not using the internal speaker amplifier?>>
NEW
Does the current consumption decrease when it doesn't use the internal speaker amplifier?>>
NEW
Should we receive 10kΩ or above when it doesn't use the internal speaker amplifier? >>
NEW
We do not connect the speaker to this IC directly (receives 10kΩ or above).
Is there any good point to use the internal amplifier even in this formation?>>
NEW
It is written "0.1µF or above" for the capacitor connected to SG pin.
Please let us know the most appropriate value when connecting the ordinary ceramic capacitor.>>
NEW
Is there any possibility of the speech amplitude change accordingly when the ML2286X output changes from 1.5V offset to 2.5V offset?>>
Operation
(software, command)		 NEW
Is it possible to play sound from the speaker using the internal speaker amplifier by inputting the rectangular wave from CPU into AIN input terminal of ML2282×?>>
NEW
Please let us know the difference of CVOL and AVOL of volume control function.>>
NEW
Is there any method to turn up the volume (when using the internal amplifier)?>>
NEW
What is the repeat function?>>
NEW
Can we play only 2 phrases sequence at PLAY command?
Please describe how to play 3 or more phrases sequence.>>
NEW
Is there mute function in order not to make a reset sound?>>
Tools NEW
Regarding the usage of the evaluation board, please describe the setting method to output the sound using ML2286× without the internal speaker amplifier.>>